homeserver/ansible: add playbook to spin up k8s cluster

- add new playbook to spin-up kubernetes cluster using k0sctl and
  k0sctl config file

ansible/roles/create-kubernetes-cluster/templates/ipAddressPool.yaml.j2

@@ -0,0 +1,8 @@
+apiVersion: metallb.io/v1beta1
+kind: IPAddressPool
+metadata:
+  name: first-pool
+  namespace: metallb-system
+spec:
+  addresses:
+  - "{{ metallb_ip_range }}"